Frequencies for first 10,000 rows of obshosp variable in nhamcsed2012 dataset :

     What type of |
  physician makes |
    decisions for |
 patients in this |
observation unit? |
               -  |      Freq.     Percent        Cum.
------------------+-----------------------------------
   Not applicable |      7,487       74.87       74.87
Box is not marked |        889        8.89       83.76
    Box is marked |      1,624       16.24      100.00
------------------+-----------------------------------
            Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 7 Nov 2016